Being well dressed is as much about how you wear clothes, as it is about what clothes you wear. And no outfit makes this point more eloquently than the dinner jacket, which to the untutored eye looks like a simple black-and-white ensemble, but in reality offers a broad spectrum of sartorial expression. In the words of British designer Mr Nick Hart, who is greatly inspired by the Rat Pack, "It's all about the viewer not being able to put their finger on why the wearer looks as sharp as they do."

Here at MR PORTER we took Mr Hart's words as a challenge, and set out to understand exactly what it is about Messrs Marcello Mastroianni, Paul Newman and Ryan Gosling that makes them look so damn sharp. Their secrets are revealed in our films, above, while you can discover why Messrs Sammy Davis Jr and George Clooney always appear impeccable in a tux by downloading the MR PORTER Tux App. If you want to emulate these icons we can supply the clothes, but you'll need to supply the style.

...As seen in

ISSUE 01THE TUX

The definitive guide to dressing for, and very much enjoying, the perfect party